Blanche married John Plantagenet, of Gaunt, 1st Duke of Lancaster in 1359. John (son of Edward Plantagenet, King Edward III and Philippa, of Hainault) was born on 6 Mar 1340 in Ghent, Flanders, Belgium; died on 3 Feb 1399 in Leicester Castle, Leicestershire; was buried in St Paul's Cathedral, London, England. [Group Sheet] [Family Chart]

1. Philippa Lancaster, Queen of Portugal
2. Elizabeth Lancaster, Duchess of Exeter
3. Henry Lancaster, King Henry IV (Bolingbroke) was born on 15 Apr 1367 in Bolingbroke Castle, Lincolnshire, Engkand; died on 20 Mar 1413 in Westminster Palace, London, England.